1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176738812a430c2e922d4dd4e6d11fa166096ec8a196f7df778c090d20798dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f3a6aca-e06e-45c1-9acd-0a4ec19eed18.json and https://artists.proofprofile.net/proofs/artist/6f3a6aca-e06e-45c1-9acd-0a4ec19eed18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926cfa1cf01de8c869142fd9ec2bab940aa9cac09f4b47363773e9706f4ea4f2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2278511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d2092b865aa7eb172fb6920b8a1722316787c1b119e573360300a0344f4b1d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2278512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a783d38d0ec3e6c3b6e58eb067af3e03a95f61155980285795a57c306f4ca2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2580981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e647a0dc9fff472b345af74579aac776876f2d2bf2a8f6b91a5ecb2eb5d9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a9b98edfbad2d908289aab1932d658ecf33f8d633925786ea0e3ca56437c67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822d79a0c3e5eb17958e6c751cf806f48ffbdc38c1412be03b8dcb2848f6b9da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJN2581168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28edd8db15aa3b97e24239a2e187465d2bf49202b0da6a73824794cc9d010dd2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7a2e9755bf8f203348d8e16219525407363e4864ea9b984b5d8faff72aa9b5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3429709e813b68481e64df2bdcfa4d298ad8cd1596ad8fbbe31f753fd076a048. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb288904bbf7b09e215d6c506eab768f641cb7f5a2cd0eb0af1e2d7a33f3d17a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9caf391fd24aff149e467ec47aa21abc031cd9e8ba6dfaa047933e7d7306f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a7429b7b187ce7e1f8ae43e8f91cc9225088bcf42572dea9f6b44b1daeaec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJM2581324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5315790e06e02b24574d816812d0b459267ffc131e926194e503283a5086690c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT65X2584655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f0dcdfe010eaa68912dc8eead9751f05a87bee186399b87a569f1e1c16c2ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f9bb81288a4cc75012a066a041cb64a4a29abb7a93327604ffefcaa03d30ab. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7821a8451af45224a6823b60bece1336f35674d2614562e7dd3cc3037430f254. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf729604bba9ed2d9e2cf44f5c190131200c2c085a3b337e912dc453c75fb4231. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c09c2fc5056f7c7f418fe6f75c49f6c54f52d2a8e96b6915c03398203dda40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830ac25a37a44fd10fd790f7556c5d22905cdc5d5080cf03812118f06f0f96cc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b077ac73e66694d7964094b53bceef287bf0816ab48a2d4502582edefd558bb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404770.
Cantonese Characters (feat. Rome Streetz & Ty Farris)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb74a8b952b53eec15eee28f6df26e483c9683d329a5035c85ea88218114e2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438a4c0291158e7b26224423a065c4be752343d356acf077356ce6c6ac58c749. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043527.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97925498cf3cc4336ffbb9b1a822377b67828e5c3ec9c1fb9fc9aeb5e7807d3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86914efab312b3a6f43f8e31b78f2976fb9bdfcf8bf3f20212996c33f7ff0e57. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82043531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef946b79e294ea4a7ae345d62c9727d40e07dfa036258585a9a56f9129d2f6e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295d33604c3930193fc12baff9aeddc4ddf2bed15b372b231d30e7b268d86f6a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4481d60bf9d10bbb7848ae5e844807949bc1e7657be759db73adf2aace5d394e. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80347e902091b0e53ce261ebe87b9910f76e9cc8d4e52c5c6391a9dbbdbf5421. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147766a314ee1d85ea0719e864379a128549ab5255056dbeeea748e1d49f14a8. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2404774.